The Turkic 100,000 iron cavalry can be said to be the biggest threat to the Tang Dynasty, and before Li Er succeeded to the throne, Li Yuan even considered moving the Tang Dynasty to Fan Deng.

The Tang Dynasty and the Eastern Turks are connected, and after Youzhou and Jingzhou, it is Chang'an. And these Hebei areas are the areas where Li Jiancheng and Li Yuanji's troops are stationed the most. After the Xuanwumen Incident, Li Er took the throne and granted amnesty to the world. However, these old princes still rebelled one after another, Lujiang Wang Yuan, who guarded Youzhou, rebelled, and Luo Yi, who guarded Jingzhou, and in addition to these, there were even more unknown ones.

At the beginning of Li Er's succession, the Turkic Jieli sent troops to the Tang Dynasty for 300 miles a day, directly to Weishui, and the troops came to the city of Chang'an, and the breakthrough point chosen was Jingzhou.

Although Li Er bluffed away with the Weishui Alliance, the Turks have invaded the territory one after another in recent years, Youzhou, Lingzhou, and Jingzhou...... The people in Hebei are even more struggling. There was even an official calendar of the Tang Dynasty who took the initiative to show goodwill to the Turks, and the people under the state also bowed to the Turks.

Why is this so, it's not because the Tang Dynasty can't keep the Turks at all. They swept through the border like a wind, and for these nomads, there was no concept of a border line at all.

The instability of the border pass, how to reassure Li Er, who was sitting in Chang'an. However, although the Turks have also suffered civil strife in recent years, the dead camels are bigger than horses, and the 100,000 iron horsemen are still the moat in front of Li Er.

Now Qin Ze suddenly said that he had a way to target the Turkic cavalry, how could he not make Li Er excited.

"Are you serious?" Li Er suppressed the ecstasy in his heart and asked at Qin Ze.

Qin Ze straightened up, but shook his head. It made Li Er a little baffled, and he was about to ask, but Qin Ze said: "Your Majesty, this thing has the effect of opening mountains and cracking stones, but it still needs a lot of study to know how to use it in actual combat." And this thing is extremely simple to make, once it is leaked and mastered by the Turks, then I will ...... the Tang Dynasty."

When Qin Ze said this, he closed his mouth and said no more, what he meant Li Er understood. Li Er is not an anxious person, and he still has some self-control. It's just that when I heard Qin Ze say this, I really couldn't help but want to see this thing.

"Ugh." Qin Ze sighed in his heart, he saw through Li Er's mind at a glance. Knowing what his idea was, although he was extremely reluctant in his heart, Qin Ze still opened his mouth and said that he could let Li Er see it.

In order to keep it secret, Qin Ze wrote down more than 30 kinds of materials for people to prepare. And each one is the same amount.

The location of the experiment was in the back garden behind the Li Zheng Hall, and Li Er dismissed everyone, leaving only Ruan Quan to follow him. Except for the three of them, the entire back garden, as well as the nearby area, can be said to be empty.

Li Er also frowned when he saw that Qin Ze wanted so many things. There are so many things that are not as simple to make as Qin Ze said, not to mention that just one of the musk is extremely expensive, not to mention ambergris and the like.

It's just that although he had some doubts in his heart, Li Er didn't speak. Just standing on the side, watching Qin Ze mix black powder.

I only saw that Qin Ze laid out all the things, and then directly found out the three most inconspicuous among them, and prepared them like this.

As for the other dozens, they haven't been touched. At the moment, Li Er also understood, Qin Ze was even thinking about this, and this caution also made Li Er begin to face it squarely.

Qin Ze didn't do much, only made a black powder filled with a bamboo tube. Then put in the twine as a fire guide, and a simple powder cartridge is ready.

Li Er on the side was also a little suspicious when he saw this, it wasn't that he didn't believe Qin Ze, but this one was too simple. There are no skills anymore, and it can even be said that anyone can learn it as long as they watch it once. Thinking of this, Li Er's face also became excited. If this thing is really as effective as Qin Ze said, such a simple production method and cheap raw materials can really be used on a large scale.

After Qin Ze did everything, he originally wanted to ask Ruan Quan to help him dig a big pit in the ground, but as soon as his head turned around, he found that this guy was closing his eyes, as if he was asleep. Lian Qin Ze looked over. This guy didn't react at all.

Qin Ze was also very helpless about this, so he could only dig a pit in the ground by himself. While digging, he also explained to Li Er: "Your Majesty, this thing is very loud, and the kid is also afraid of causing unnecessary trouble." After the kid is lit, please stand back a little so as not to hurt yourself. ”

The pit doesn't need to be dug deep, it's only about half a foot, Qin Ze put the bamboo tube into it, pulled out the lead, and then filled the pit with soil.

Doing all this made Li Er retreat everything. Qin Zecai lit the fuse, and then he also ran to the side quickly.

After all, the twine is not as fast as the fire line of later generations, and it is extremely easy to extinguish. This is also what Qin Ze has to solve next, but now he doesn't have the leisure to think about this.

As soon as Qin Ze ran out of ten zhang away, he heard a muffled sound of "boom~" behind him, turned around to look, and saw the soil in the pit flying all over the sky, straight up more than two zhang high. If the three of them hadn't stood far away, I was afraid that they would have been left with this dust for the rest of their lives.

Because Qin Ze put less gunpowder this time, and it was buried in the ground, the power did not look as thrilling as before. But when the dust settled, Li Er stepped forward to check, and he also gasped.

I saw that the original half-foot-deep pit was no longer visible at all, and it was obviously a lot deeper. At the moment, I was also excited to say three very good things in a row.

And Qin Ze stood aside and breathed a sigh of relief, as long as Li Er could be stabilized, everything would be fine.

"Is this really just a few ingredients?" Li Er was overjoyed, and then asked Qin Ze again.

He still didn't believe how something that seemed so simple could be so powerful when mixed together. This hand was really like a miracle in Li Er's eyes, and he was a little more convinced of Qin Ze's apprenticeship with the immortals.

At this time, he also knew why Qin Ze said that this thing was the natural enemy of the cavalry, not to mention the huge noise, I am afraid that no horse can withstand it.

"Your Majesty is exactly what it is, but it's not perfect yet. There's a good chance that it won't ignite, and if it does, it's easy for someone else to pick it up. At that point, it will be very easy to find out how to make it. Therefore, this thing cannot be used at the moment, and must be ......"

"Well, needless to say. I know what you mean. Seeing what Qin Ze was going to say, Li Er also knew what he had in mind, so he immediately waved his hand to interrupt Qin Ze's words.

Aren't you afraid that you can't help it, so you can use it in advance?

"I naturally know this, you can rest assured, I still have patience." Li Er nodded at Qin Ze with a smile and said.

"Thank you, Your Majesty." Qin Ze also followed Li Er's words and said. When it came to this point, Qin Ze said everything that should be said and what should not be said, and it would only backfire if he continued to say it, so he also obediently closed his mouth.

When the dust settled, Qin Ze originally planned to ask Ruan Quan to help him fill the pit. But this guy closed his eyes again, and Qin Ze was so angry that his teeth itched.

When Li Er saw Qin Ze's appearance, he also shook his head slightly. However, he also remembered one thing, his face changed, and he became extremely solemn and asked Qin Ze, "Tell me, what are you doing all this for?" Why do you suddenly want to go to the border gate? ”

Qin Ze's sudden self-motivation really surprised Li Er. If Qin Ze just wanted to do something else, he wouldn't feel anything. But as long as it was mixed with Absolute, Li Er was very uneasy about Qin Ze. Not to mention that Qin Ze is going to the border pass, which can be said to be the weakest place for imperial power, and of course it is also the best place to rebel.

If Qin Ze was a mediocre person, Li Er really wouldn't care too much. Even if that kind of person goes to the border, he can't make many big waves. But Qin Ze is different, this guy is a hidden dragon, and if he is not careful, he can definitely turn the river and the sea.

In fact, Li Er really thought about Qin Ze complicatedly, and rebellion was a very boring thing. Not to mention that rebellion is not that simple, let alone when the rule of Zhenguan is about to begin. Just saying that rebellion needs soldiers, money, and sometimes a careless person may lose his life.

It is absolutely impossible for a person like Qin Ze to do this, of course, if he is forced to a Jedi, it is not impossible to consider. But for now, Qin Ze doesn't have that thought.

When the sky fell, Li Er was carrying him, and he still hoped that one day, he could become a gentleman in Chang'an City, and he would have nothing to do with a dog's leg on the street to flirt with a woman from a good family or something.

Now hearing Li Er's question, Qin Ze's body was also shocked, and then he smiled and replied embarrassedly: "Your Majesty, the kid recently reached a matchmaking relationship with a girl. But the kid is just a Jiupin to join the army, and he really doesn't have the confidence to go to the door to propose marriage, so he thinks that he can earn a few meritorious deeds, improve his lintel, and find a good match. ”

For Li Er, Qin Ze will not hide it at all, and directly said what he thought in his heart. He knew that what Li Er didn't like the most was that he hid it from him, which would make him feel uncontrollable.

And Li Er was also a little stunned when he heard Qin Ze's words, and felt a deep helplessness in his heart.

It was the first time he had heard someone tell him in person that the reason why he went to the border was not because he wanted to spend his blood for Datang, nor did he want to prosper for Datang. And it's so straightforward to tell myself: I'm just here to get promoted.

And this promotion is still for a woman, so from beginning to end, Li Er still didn't see anything he wanted in Qin Ze. This is still a mud that can't be helped, and it's still the lazy donkey with no heart and lungs.

can face himself so sincerely, except for Qin Ze, he really can't find a second one.

Li Er suddenly felt a little pain in his head again, and rubbed his head with his cheeks, for fear that he would not be able to help but hit Qin Ze a few boards later, so he directly waved his hand to ask Qin Ze to get out of here.

This will Qin Ze can also see that Li Er is obviously a precursor to anger. Seeing that you are getting out, where is not to seize the opportunity. hurriedly said goodbye to Li Ershi, and then ran away without a trace.